Characteristics of Cable 1&period;Max Long-time operating temperature of PVC insulated cable is 70°C&comma;XLPE 90°C 2&period;Installing temperature of cable should not be less than 0°C 3&period;Max short-circuit temperature is&colon;PVC not exceed 160°C&comma;XLPE 250°C&comma;Not more than5 Sec&period; 4&period;Permitting bending radius cable&colon; Not less than 10 D times &lpar;D&colon;external diameter of cable&rpar; 5&period;Perfect chemical stability&comma; resistant against acids&comma; alkali&comma; grease and organic solvents&comma; and flamer retardant&period;Type and Specifiction

Number of Cores & Nominal Cross-section Area

Number of Cores

1

2

3

3&plus;1

4

3&plus;2

4&plus;1

5

Section Area &lpar;mm2&rpar;

4 - 500

2&period;5 - 500

2&period;5 - 300

4 - 300

2&period;5 - 300

2&period;5 -300

4 - 300

2&period;5 - 95

Installation&colon;1&period; The installation temperature should not over 20ºC&comma; If the ambient temperature is lower than 0ºC&comma; the cable should be preheated&period;2&period; The bending radius of cable should not less than 8 times&period;3&period; After installantion&comma; the cable should with stand voltage test for 15min&period; 3&period;5kv D&period;C&period;

In air&colon;1&period; As the single core cable laying in parallel&comma; the distance between the cable's center is 2 times &lpar;for cables which cross section area of conductor ≤185mm2&rpar; and90mm &lpar;for cables which cross sectional area of conductor≥240mm2&rpar;2&period; Ambient temperature&colon; 30ºC3&period; Max&period; temperature of conductor&colon; 70ºC4&period; Rating factors of current rating for ambient temperature&colon;

Air temperature

20ºC

25ºC

35ºC

40ºC

45ºC

Rating factors

1&period;12

1&period;06

0&period;94

0&period;87

0&period;79

Direct in ground&colon;1&period; When the single core cables are installed separately&comma; the distance between the cable's center is 2 times of the cable diameter&period;2&period; Ambient temperature&colon; 25ºC&period;3&period; Max&period; temperature of conductor&colon; 70ºC&period;4&period; Soil thermour resistivity&colon; 1&period;0ºC&period; m&sol;w&period;5&period; Depth&colon; 0&period;7m6&period; Rating factors under different ambient temp&period;&colon;

Thin steel wire armoured PVC cables are used in case of great difference of levels or vertical installation and Can do vertical burial&period;Can bear moderate positive pressures and tension forces&period;